Benjamin f



B. F. GRAVES.

MILKING MACHINE. v

No. 75,261. Patented Mar. 10.1868.

.geiten lfaire @nicht @fitta -BENJAMIN E. GRAVES, QE GROTON, MASSACHUSETTS.

Letters Patent life-75,261, dated Marchio, 1868.

IMPROVEMENT IN Murine-MACHINE.

`Be itfknown thatI, BEJAMIN F. GBAVES, of G roten,' in the: county of .Middlesex,and Commonwealth o t' Massachusetts, have invented a new and useful Machine forA Milking Cous; and I-do, hereby declare that the4 following is a full, clear, and exact description of. the constructonland operation of' the same, reference being' had tothe annexed drawings,fmaking a part of this specification, in which- Figurel is a perspcctivefview ofthe entire'ira'elcline. .Figui-o 2 is a longitudinal'sction of the pump,.' i t `s pistennnd valves.

To enableothers skilled in the art to make and use my invention,- I will proceed to describe its principles,

con-struction, and operation. y

The naturel of' my zinten-tion .consists 'in drawing. milfk 'fromcews .by'rmeansyof a pump, connected by an elastic tube with elastic cups tting upon the teatsand udder of the cow, with transparent glass connections, through whihlthe milk may be seen to. flow, with Step-cocks, by which Athe machine may beY made to' draw from -4one er more teats at pleasure,-'and valvesfso arranged as to open andv close alternately with the-working of the pump, and 'thus' milk the cow into the 'pnilor other-vessel,

vA represents` a.' wooden platform, to whichare attached' elastic'tubes,fz, by means of the wooden brackets jj, into which the tubes lenter and connect with a pump, 13,--by m-eans ofmetallic'ppes rs. Two ball-and-socket` or' other valves, p q, are so arranged at vthebottorn ofthe pump, being in the drawing shown to be heldin posi,- touby spiral sprin'gso'o, that-WhenA the. piston m m is drawn outward the valvep is opened, and the mill: admitted into the pump, while the valve q is closed, and-when the piston is forced inward the valvep is closed, and the valve g opened, and the milk in the pump driven throughit and the tube z' into the pail. a a a a are cups of rubber or other elastic materialto` t'upenthe-tcatsfof thev co\v,^with= flanges of thesamc, designed to press air-tight against the ndder, the base of .the cups -bc'ing thick enough not to collapse, while the tops and flanges are suiciently thin and elastic-to prcs's'the t'eat's and udd'c 'und'erthe action of the pump,-said cups and flanges, as thus constructed, being different ifroml'any heretofore invented. j'lhe cups a 4at aaare'connceted b glass tubes, b 6 6 b, with ltubes of rubber or other material, c c c c, which again are connected 'with metallic tubes, which enter a metallic cylinder, e, which receives the'milk, and from which it is'drawn by the pump through the tub-efinto the pump, as before described.' .Alt the base of each tube above-the cylinder is a stop-v cock, d, which may bc turned when the milk from any tent, as seen through the glass tube b, 'ceases to flow, unid thus prevents drawing the teat unnecessarily, and making the cow rcstive. The metallic rod lz, hinged to the platform A, so as tc turn freely, sustains thetca't-cups, .by means of a. ring at its top, at any desired height, by'

means of-thc r'od g, to which it is secured by means ofa'thumb-screw or otherwise.' The pump B is attached to the tubesfz, so that, by means of the twisting of sai-d tubes or otherwise,iit vmay be inclined at any desired angle. .t The pump may be so constructed as' to haveia rotary motion.

What I claim as my invention, and desire to secure by Letters '.Patent, isv The arrangement of the pump, n'ith the flexible tubsteatcups, glass tubes, stop-coch, devices for adjusting the teat-cups to the udder of the cow, all Aconstructed and arranged substantially as described and for the purposes ,specied Y BENJ'. E. GRAVES.

Witnesses 0. B. CHENEY, HENRY S. FnENom 

